Hinge lubricator



FIG. 1 is a perspective view of a hinge lubricator incorporating my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a front elevation view thereof. 

The ornamental design for a hinge lubricator, as shown and described. 